bit_to_xreal :
A bit-to-xreal connector.

The bit_to_xreal primitive converts a bit-type signal to an xreal-type signal. The digital level of the input signal is converted to an analog level, defined by the conversion level parameters: level0 and level1.

The parameters level0 and level1 define the conversion levels of logic 0 and logic 1, respectively. The parameters rise_time and fall_time define the finite rise and fall times of the 0-to-1 and 1-to-0 transitions, respectively.

The parameter delay specifies the inertial delay of the primitive. In other words, if a new input event arrives before the previous event finishes its transition, the new event’s transition will override the current transition.

The parameters valueX and valueZ define the mapped values of logic X and logic Z, respectively. For example, if valueX is set to 0, all input values corresponding to logic X are treated as logic 0. Note that by default, the primitive ignores the logic X and logic Z values of the input and retains the last output value.

Input/Output Terminals

Name	I/O	Type	Description
out	output	xreal	xreal-type output
in	input	wire	bit-type input

Parameters

Name	Type	Default	Unit	Description
width	integer	1	None	connector bit-width
level0	real	0.0	None	conversion level for logic 0
level1	real	1.0	None	conversion level for logic 1
rise_time	real	0.0	seconds	rise transition time
fall_time	real	0.0	seconds	fall transition time
delay	real	0.0	seconds	propagation delay
valueX	logic	1’bx	None	mapped value of logic X
valueZ	logic	1’bz	None	mapped value of logic Z